I had the thought once that it would be a useful - if not easy - to submit patches to as many of these projects as possible to allow interoperation (probably by

I had the thought once that it would be a useful - if not easy - to submit patches to as many of these projects as possible to allow interoperation (probably by implementing the same protocol(s) in as many as possible). It's the kind of thing where you really want enough common protocol use that most apps can communicate to get network effects. (But of course, I hardly have the time or perhaps even ability to really go far with that thought. Oh well.)